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� Home : ITU-T : Publications : Recommendations : H�Series : H.450.4 : H.450.4 (03/13)
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H.450.4�:�Call hold supplementary service for ITU-T H.323 systems �

Recommendation H.450.4 (03/13)

Approved in 2013-03-16

Status : In force

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Table of Contents

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Summary

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